Răspuns:
Explicație pas cu pas:
a) 5/36 + 7/36 = 12/36 (12 = 1/3
b) 3/5 (4 + 1/4 (5 = 12/20 + 5/20 = 17/20
c) 2/8 (3 + 1/2 (12 + 5/6 (4 - 3/24 = 6/24 + 12/24 + 20/24 - 3/24 =
= 18/24 + 20/24 - 3/24 =
= 38/24 - 3/24 =
= 35/24
d) 12/8 - 4/8 = 8/8 = 1
e) 4/3 (7 - 2/7 (3 = 28/21 = 6/21 = 22/21
f) 1/2 (15 + 3/5 (6 + 5/15 (2 - 1/30 = 15/30 + 15/30 + 10/30 - 1/30 =
= 40/30 - 1/30 =
= 39/30
